초록 ▼

A lining wear measurement system which accepts signals from a plurality of movement/displacement sensors coupled to respective auto-adjusters of vehicle brakes and giving information about prevailing brake pad/lining thickness. The system includes a means to hold internally a target wear-out point r

A lining wear measurement system which accepts signals from a plurality of movement/displacement sensors coupled to respective auto-adjusters of vehicle brakes and giving information about prevailing brake pad/lining thickness. The system includes a means to hold internally a target wear-out point representing a minimum acceptable brake lining thickness based upon the characteristics of known linings and an internally stored starting point which is set automatically at a suitable point in time after the brake has been equipped with a set of replacement linings so as thereby to take account of the reducing disc or drum thickness as the life of the brake progress. Alternatively, the system can hold an internally stored starting point which is arranged to be manually initiated but actually stored at some suitable point in time thereafter upon each set of replacement linings being installed. The system can also recognise an opening up operation of the brake, such as is necessary to remove worn linings for inspection or replacement purposes, by comparison of pre-opening and post-opening brake position readings.

대표청구항 ▼

1. An electro mechanical brake assembly, characterized by:a brake disk stack; a housing including a guideway; and a ram nut guided by said guideway for movement toward and away from said brake disk stack, said guideway and ram nut respectively having polygonal cross-sections defined by plural outer

1. An electro mechanical brake assembly, characterized by:a brake disk stack; a housing including a guideway; and a ram nut guided by said guideway for movement toward and away from said brake disk stack, said guideway and ram nut respectively having polygonal cross-sections defined by plural outer side surfaces which rotationally interfere with one another to restrain rotation of said ram nut relative to said housing; a lead screw in threaded engagement with said ram nut whereupon rotation of said lead screw effects linear movement of said nut for selective movement into and out of forceful engagement with the brake disk stack for applying and releasing braking force on a rotatable wheel; and an electric motor drivingly connected to said lead screw gear for rotating said lead screw to effect movement of said ram nut toward and away from said brake disk stack.